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Unit 4 Review

Total questions: 28

Worksheet time: 20mins

Name
Class
Date
1.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
2.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
3.
The two strands of nitrogenous bases in DNA are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
4.
If we think of DNA as a ladder, which parts are the sides of the ladder?
a)
the nitrogenous base pairs
b)
the phosphate-sugar backbone
c)
the genes
d)
the phospholipid bilayer
5.
How does RNA differ from DNA?
a)
RNA contains uracil and deoxyribose
b)
RNA contains ribose and thymine
c)
RNA contains uracil and ribose
d)
RNA contains adenine and ribose
6.
How would the DNA sequence GCTATA be transcribed to mRNA?
a)
GCUAUA
b)
CGATAT
c)
CGAUAU
d)
GCUTUT
7.
In messenger RNA, each codon specifies a particular
a)
nucleotide
b)
enzyme
c)
amino acid
d)
promoter
8.
The process of making proteins on the ribosome based on instructions from messenger RNA is called
a)
transcription
b)
transformation
c)
translation
d)
molecular biology
9.
What does this picture represent?
a)
amino acid
b)
base pairing
c)
nucleotide
d)
the DNA molecule
10.

What mutation has occurred here?

T-G-A-C-C-A

T-G-A-G-C-A

a)

Substitution

b)

Deletion

c)

Insertion

d)

Frameshift

11.

ATT-TGA-GCC- Original

ATT-GAG-CC - Mutated

The example above is an example of a

a)

Insertion- Frameshift

b)

Deletion- Substitution

c)

Deletion -Frameshift

d)

All of the above

12.
Which of the following would result in a frameshift mutation?
a)
Insertions only
b)
Substitution only
c)
Deletion only
d)
Insertions and Deletions
13.

Why are insertion and deletion mutations so harmful?

a)

They change all of the codons from the mutation on down the line, which changes the amino acid sequence

b)

They insert things that an organism doesn't need.

c)

They often delete things that organisms need.

d)

Insertion and deletions are not any more harmful than substitution mutations.

14.

One nucleotide base is changed so only one amino acid

is affected

a)

Substitution Mutation

b)

Point Mutation

c)

Translocation

d)

Inverse Mutation

15.

This is the practice of producing a genetically identical cell or organism

a)

Cloning

b)

Gel Electrophoresis

c)

Genetic Engineering

d)

DNA Fingerprinting

16.

Which kitten is most likely the offspring of this cat?

a)

1

b)

2

c)

3

d)

4

17.
Which field would most likely NOT incorporate  biotechnology?
a)
Agriculture 
b)
Genetics 
c)
Medicine
d)
Mining 
18.
Normal-
GAG-CTC-GAC-AGA
Mutant
GAG CTC-CAC-AGA
a)
no mutation
b)
substitution
c)
insertion
d)
deletion
19.
A type of substitution in which no  amino acids change is called 
a)
Missense
b)
Nonsense
c)
Silent
d)
Deletion
20.
DNA sequence is ACAGTGC. How would this be coded on mRNA?
a)
TGTCACG
b)
UGUCACG
c)
GUGACAU
d)
CACUGUA
21.
The process to go from DNA to mRNA is _______
a)
translation
b)
transcription
c)
replication
d)
protein synthesis
22.
Which is the mRNA molecule that would be transcribed from this DNA template:
TGGCAAGTACGT
a)
ACCGTTCATGCA
b)
UGGCAAGUACGU
c)
UCCGUUCUUGCU
d)
ACCGUUCAUGCA
23.

Transcribe the following DNA strand: CTG AAT

a)

GAC TTA

b)

CTG AAT

c)

GAC UUA

d)

CUG AAU

24.

Which molecule carries the anticodon?

a)

mRNA

b)

rRNA

c)

DNA

d)

tRNA

25.

Translate this RNA sequence: AUGCAAUGA

a)

Met-Glu-Stop

b)

Thr-Glu-Stop

c)

Met-His-Stop

d)

Thr-Pro-Stop

26.

What are the three steps of transcription?

a)

Initiation, elongation, and termination

b)

Splicing, editing, and polyadenylation

c)

Transcription, processing, translation

27.

The physical transfer of a gene from the DNA of one organism into another organism in order to produce an organism with desired traits is called

a)

Genetic engineering

b)

Karyotype

c)

Cloning

d)

Selective breeding

28.

Advantages of genetically modified crops include(s)

a)

insect resistance

b)

drought/freeze resistance

c)

higher yield

d)

all of these are reasons for using GMOs

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